Knockback against opponents with Flight, Clinging, Catfall

[David Johnston2]

[QUOTE=nerfninja;792997]

If the knockback does not bring them into contact with any terrain, do they suffer collision damage with the ground?

No. They'd just kind of skid along the ground until they came to a stop. You need to am for trees and walls behind your target.

What if the opponent has an advantage like Flight, Clinging, or Catfall.

Flight wouldn't help except by making it difficult to hit the target in a way that will make it collide with anything. I would say that Clinging would double your ST for resisting knockback...but only if you happen to be standing on a clingable surface (for example, not dirt) and are actually using your clinging (which would of course halve your movement and mean that you are walking kind of funny.) As for Catfall, I think you'd need to make an acrobatics roll or something to bring it into play since you aren't actually falling.